Gates 12255 HVAC Heater Hose - Transmission Oil Cooler To Housing

Gates Molded Heater Hose for Honda Civic

The Gates 12255 molded heater hose is a factory-molded, OE-style coolant hose built for tight engine compartments. It is made from EPDM and sized with 0.5-inch inside diameters at both ends, with a 10.88-inch centerline length for a precise routing path.

Compatible with 2012-2015 Honda Civic applications, this molded hose is used in the transmission oil cooler to housing position on listed vehicles. The Gates Molded Heater Hose line focuses on shaped replacement hoses that follow original routing for cleaner fitment in compact engine bays.

Key Features

• Brand: Gates
• Part number: 12255
• EPDM construction for coolant, water, and air service
• Factory-molded shape for OEM-style routing
• 0.5-inch inside diameter at both ends
• 10.88-inch centerline length
• Approved for marine applications

Product Details

Gates 12255 is a molded heater hose designed for vehicles that require a shaped hose rather than a straight universal section. Its molded profile helps match the original hose path in tighter engine compartments, which is especially relevant for Honda Civic cooling-system service. This hose is listed for 2012 Honda Civic and 2013-2015 Honda Civic applications at the transmission oil cooler to housing location.

This part cross-references Carlson 13255 for the same application.

Common Issues This Hose Can Address

• Cracked or hardened coolant hose material
• Leaks at a molded hose section
• Poor hose routing in a confined engine bay
• Replacement needs for transmission oil cooler to housing hose routing
• Service on coolant, water, or air lines where a molded EPDM hose is specified

Installation Notes and Tips

Verify hose routing, end diameters, and centerline length against the removed part before installation. Confirm the vehicle application by year, make, model, and hose position on the Honda Civic. Inspect adjoining fittings and clamps for wear or corrosion so the replacement hose seats correctly and maintains a secure seal.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part for vehicles that require factory-shaped hose geometry. The EPDM construction and molded design support consistent fitment for the listed Honda Civic applications.